Method of manufacturing goods of rubber, ebonite, or vulcanite.



NEE

I OTTO CLAUDE IMMISGH, OF FlNGHlJEY, ENGLAND.

i/in'rrion or MANUFAGTUELINGGOGDS or Application filed February 19, 196%.

To all whom it may concern:

Be it known that I, Or'r o CLAUDE 1M1?- iiison, a subject of the ,King of Great Britain, residing at l Voodside Park Finchl'ey, Middlesex, England, have invented a new and useful Method of Manufacturing Goods of Rubber, Ebonite, or Vulcanite; andl do hereby declare that the tolsion.

lowing is a full, clear, and exact description of the invention, which 'Will enable others skilled in the art to Wlncli tappertains to make and use the same.

My invention relates to the manufacture of goods or articles of various kinds and possess the structure of a homogeneous mass. in order to improve the quality of the n a terial by increasing the homogeneity it has been proposed to increase the temperature to which the material is rased, and also to expel the air from theniass, by increasing the pressure but these groceeding have not hail the result of producing reniri'ned ruber of a q 'iality equal to that of the original rubber.

According to my invention 1- add to the 'Waste rubber, pre.t'erably broken up into in the rubber trade as small particles known being reduced to a.

crumb (instead of granulated or pulverized condition) a sinall quantity 01? a volatile liquid such as ca'jeput oil or a solution deleterious effectupon the rubber and having a boiling point slightly below the ternperature employed in the subsequent treatment of: the material.

T he oil or other volatili been mixed "with the mass the lplaced in ahot mold having lar er capacity than the volume of the ltiole required, say in the direction of the longest dimen- The mold is then closed under pres sure preferably less than wiil he ultimately used and raised to a vuicarnerng or era- 01" a volatile oil, having no l'quid having atter is then Specification of LetteraPatent.

road,

ianonrrn, on vonoamrn.

Patented Aug. 17, 1909.

Serial No. erases.

ture of say from 220 to 380 Fall, with the result that the oil mingled with the n ass becomes vaporized, the vapor displacing the air contained in the interstices of the mass.

,In practice I have found that a quantity of oil equal tea 10th of l per cent. of the mass gives a, good result'but it is understood that the quantity of oil used n'iust in all cases be enough to produce snfiicient oil vapor to drive out any air contained between the par ticles as hereinbetore' mentioned Wl'iile still hot the mold is now placed in a suitable press andsubjected to such pressure t-hat'the volume of its contents shall be approximately that of the requiredarticle the pressure being preferably maintained While't-he mold is cooling. a /hen cool a clamp is attached to the mold to retain the pressure in the mold and its contents are then slowly re:- heatedgn-the temperature before inei'itioned.

if desired, the mold may be again sub- 3' cote/d to pressure and reheated this compressthrough the ";3Et11S1OI1 of the'material during the heating operation 71 find that in the manufacture articles or it is desirable to provide means, such as a spring, which yield ightly under any excess of pre ilbDv that which the clamp is intended to retain.

Having now particularly ascertained the nature of my said invention and in What manner the same is to be performed, I declare that what I claiinism-- 1 in the rnanuifacture or articles from Waste rubber, tion to the mass oi? just 'aboutenough of an i, volatile at e temperature rat used in the subsequent treatment, said oil being of such nature that when the mass is heated to the required. temperature the restoration oi plasticity will be accompanied by the expulsion from the s of the en large dimensions described and vulcanite or the like, the addislightly below trapped by theyapo 3 OfSdld volatile oil. I

The process of manufacturing articles from M, vulcanite or the like, consisting i reducing the material to be treated to suiw le state of isiutegration adding theretoa'ouantity of cajeput oil, then subjecting the niafi under slight pressure in a a -temperatu-re "from 220 to 280 4, The process of manufacturing" articles ah, 1n order to volatilize the oil and then .-:em Waste rubber, vulcanite er the'like, c0n-' compressing andcoolingthe mass. I sisting'in'redueing the'mat '3. The process of manufacturing articles to/a suitable state of disintegration,- adding mjwa te rubber, vulcanite or the like, conthereto about onetenth of'cme per cent. of'a; Sting educingthematerialto be treated, volatile oil oft "such a nature that when the a suitable state of "disintegration, adding mass is) heated to the required temperature, the. restoratieuof plasticity Will be acco'm- 30 pahied by the -e, ulsion of the entrapped air, by-the vapors'ql said volatile oil,'subjeeti ng the mass 'under; slight pressure in the mold toa temperature 1fr0m220$ td280 FalL, comthereto just about enou h Ofan oil *volatile' at a temperature slightly below that used iriijeg thevsubsequent treatment, said "Oll being of 5 1 1; a naturethat when the mass is heated "tothe" reqhired temperature, the resterati'qu. pfplasticlty will be: aepmnpaniedby the expulsion ofthe entrapped air-by the" diapers 5 of said 0latile.0;i1,' subpc'tin'g the massvunder allowing it' ti). cool While maintami the slig ht'pres's'ure inthe' mold t -a temperature pressure and; then reheating "it and ag'alh alfrom .1220? to 28O1Fah., compressingjt'he I l(Jwi-I1, -;,it to cool. same so that itshal assume approximately: H t shape ofthe finished'artiele, allowing it OTTO CLAUDE IMMISGH' 1 01; while maintainingthe pressure and Witnesses:

1i vreheating it aiid again allowing it td JOHN E. Bousmn, I G. G. BEDFERN.

' proximately the shape bf' thefinish ed article;

erial to be treated.

pressing the Seine so that it shall assume-a1) 35 

